Figure 3: Reaction steps and physical setup of the pathway-dependent chemistry platform.

(a) Schematic of the three reaction steps selected to build this chemical network. The exploration of the reaction network is obtained by reacting a core molecule (1) in three-step reactions with four different reagents in each step (compounds 2a–d, 4a–d and 7a–d, respectively). (b) Photograph of the pathway-dependent chemistry platform. The setup of this platform consists of 14 computer-controlled syringe pumps, three flow reactors (connected with each other using polytetrafluoroethylene tubing and manifolds), a bench-top infrared spectrometer equipped with an ATR-IR flow cell and a bench-top ESI-MS.